On the basis of pollen analysis of surface sample in North China, polynomial function analysis method was applied to establish pollen climate response surface of Pinus, Betula, Quercus, Artemisia, Chenopodiaceae, Compositae, Picea, Ephedra, Gramineae in North China, therefore an easy and applicable method for reconstructing palaeoclimate and palaeoenvironment with data of fossil pollen was founded; Multi-analysis method was applied to analyse the principal elements of surface sample pollen in central Inner Mongolia Steppe, the assemblages of surface sample pollen in steppe area and its relationship with vegetation type were discussed with helps from spore-pollen analysis of a peat section in Chasuqi, Inner Mongolia and 〓C chronometer, fossil pollen data were obtained with high resolution on the peat section in Chasuqi. Vegetation succession and environmental changes since Holocene at resolution of 70 years were primarily reconstructed in south Mount Daqingshan and Plain Tumete. The changes in the area were copmared with those in the neighbouring areas during the same period. It was found that Holocene environmental change had undergone the following stages: cold-arid, temperate-wet, warm-wet, temperate-arid and cold-arid, and the climatical optimum period occurred in 5000-4100 aB.

本文在對中國北方表土花粉研究的基礎(chǔ)上，采用多項式函數(shù)回歸方法建造了中國北方松屬谁有国产A片网站、樺屬又粗又长水又多免费视频、櫟屬、蒿屬黄p网站免费网站在线、藜科欧美极品视频、菊科、云杉屬一级无码日韩A片视频、麻黃屬曰批A片、禾本科等的花粉——氣候趨勢面，從而為利用化石花粉資料直接恢復(fù)古氣候欧美大乳爱爱视频小日本爱爱视频、古環(huán)境提供了一種方便易行的方法日韩欧美偷拍一区二区三区；采用多元分析方法對內(nèi)蒙古中部草原區(qū)表土花粉進(jìn)行了主成分分析，探討了草原區(qū)表土花粉組合的規(guī)律及與植被類型的關(guān)系AAA级黄色毛片；本文還應(yīng)用孢粉分析方法男人扒开女人的腿桶到爽视频，結(jié)合〓C測年技術(shù)，通過內(nèi)蒙古中部察素齊泥炭剖面高分辨率的化石花粉數(shù)據(jù)啪啪流水视频，初步恢復(fù)了大青山山地南部及土默特平原地區(qū)分辨率為70年的全新世以來植被演替和環(huán)境變遷的狀況亚洲黄色免费在线，并與鄰近地區(qū)的全新世古氣候、古環(huán)境進(jìn)行了對比研究日韩精品第四页在线观看网站免费，研究發(fā)現(xiàn)自拍日韩动漫欧美视频网站，本區(qū)域全新世古環(huán)境的變遷序列基本上可以與周圍地區(qū)及華北地區(qū)進(jìn)行對比，其環(huán)境變遷經(jīng)歷了涼干～溫濕～暖濕～溫干～涼干的變化可以直接看AV的免费网站，且氣候最適宜期出現(xiàn)在5000～4100aB.P日韩福利在线视频播放网站。

North deciduous fruit trees evolved into biomechanism of dormancy for a long time to adapte to environmental and climatical changes in winter.

休眠是北方落葉果樹長期形成的一種對季節(jié)性氣候變化生物適應(yīng)和馴化的結(jié)果。

The outside area is planned as an extension of the nearby park. Because of the extreme climatical conditions and the low construction costs, the building is kept as compact as possible.

建筑周圍的區(qū)域被設(shè)計成附近公園的延伸久久精品久久精品，由於當(dāng)?shù)貥O端的氣候條件和非常低的建筑預(yù)算www日本黄色，該建筑被設(shè)計得盡量簡潔。

North deciduous fruit trees evolved into biomechanism of dormancy for a long time to adapte to environmental and climatical changes in winter.

休眠是北方落葉果樹長期形成的_種對季節(jié)性氣候變化生物適應(yīng)和馴化的結(jié)果日韩精品自拍视频1页在线观看网站。

Climatical difference is very big here.

其氣候差異甚大AV资源在线免费观看。

climatical：氣候的, 氣候上的 (形)

climatic 氣候上的 (形) | climatical 氣候的, 氣候上的 (形) | climatically 氣候上; 由氣候引起地 (副)